Viewing archive of Friday, 27 October 2017
Geophysical report
Any mentioned solar flare in this report has a scaling factor applied by the Space Weather Prediction Center (SWPC). Because of the SWPC scaling factor, solar flares are reported as 42% smaller than for the science quality data. The scaling factor has been removed from our archived solar flare data to reflect the true physical units.
Solar and Geophysical Activity Summary 2017 Oct 27 0245 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Solar and Geophysical Activity Summary
SGAS Number 300 Issued at 0245Z on 27 Oct 2017 This report is compiled from data received at SWO on 26 OctA. Energetic Events
Begin Max End Rgn Loc Xray Op 245MHz 10cm Sweep None
B. Proton Events
None
C. Geomagnetic Activity Summary
The geomagnetic field was at quiet
to active levels
D. Stratwarm
Not available
E. Daily Indices: (real-time preliminary/estimated values)
10 cm 077 SSN 023 Afr/Ap 016/018 X-ray Background A7.5 Daily Proton Fluence (flux accumulation over 24 hrs) GT 1 MeV 2.9e+08 GT 10 MeV 1.5e+04 p/(cm2-ster-day) (GOES-13 satellite synchronous orbit W74 degrees) Daily Electron Fluence GT 2 MeV 7.20e+07 e/(cm2-ster-day) (GOES-13 satellite synchronous orbit W74 degrees) 3 Hour K-indices Boulder 4 2 4 5 3 3 2 1 Planetary 4 2 3 4 3 4 3 1
F. Comments
None
All times in UTC
Latest news
Friday, 28 March 2025
X1.1 solar flare
Monday, 24 March 2025
Coronal hole faces Earth
Saturday, 22 March 2025
Strong G3 geomagnetic storm watch for 23 March
Latest forum messages
More topicsSupport SpaceWeatherLive.com!
A lot of people come to SpaceWeatherLive to follow the Sun's activity or if there is aurora to be seen, but with more traffic comes higher server costs. Consider a donation if you enjoy SpaceWeatherLive so we can keep the website online!
Latest alerts
07:15 UTC - 10cm Radio Burst
Begin Time: 01/04/2025 06:45 UTC Maximum Time: 01/04/2025 06:45 UTC Duration: 1 minutes. Peak flux: 190 sfu
07:06 UTC - Solar flare
Strong M5.61 flare
06:48 UTC - Radio Blackout
Moderate R2 radio blackout in progress (≥M5 - current: M5.36)
06:45 UTC - Radio Blackout
Minor R1 radio blackout in progress (≥M1 - current: M1.7)
02:15 UTC - Solar protons
Moderate S2 Solar Radiation Storm - Infrequent effects on HF radio through polar regions and satellite operations
Space weather facts
| Last X-flare | 2025/03/28 | X1.1 |
| Last M-flare | 2025/04/01 | M5.6 |
| Last geomagnetic storm | 2025/03/27 | Kp5 (G1) |
| Spotless days | |
|---|---|
| Last spotless day | 2022/06/08 |
| Monthly mean Sunspot Number | |
|---|---|
| February 2025 | 154.6 +17.6 |
| Last 30 days | 128.5 -22.7 |